Morinaga (written: ) is a Japanese surname. Notable people with the surname include:
*
Ai Morinaga, Japanese manga artist
*, Japanese voice actress
*
Masaki Morinaga, Japanese long jumper
*, Japanese singer
*
Milk Morinaga, Japanese manga artist
*
Sōkō Morinaga, Rinzai Zen roshi
*, Japanese footballer
*, Japanese economist and academic
See also
*
Prince Morinaga, murdered by Ashikaga Tadayoshi during the Kemmu Restoration
*
Morinaga & Company, a Japanese confectionery company
*
Morinaga Milk Industry, a Japanese milk products company
{{surname
Japanese-language surnames